However, the incident didn't completely distract Jessica from her work out.

The 29-year-old star - who took up boxing earlier this month to get fit after being criticised for seemingly gaining weight last year - added on the micro-blogging website: "Boxing has changed my life! I have so much energy and it has cured my insomnia. Although I don't think I can get out of bed I'm so sore."

Jessica - who is currently dating Smashing Pumpkins frontman Billy Corgan - has previously spoken about how obsessed she is with her new fitness regime.

She tweeted: "Just done boxing... second day in a row... Have I lost my marbles?"